package com.xinghen.ace.common.util;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;

import javax.servlet.http.HttpServletRequest;

/**
 * @author xinghen
 * @ClassName: ClientUtil
 * @Package: com.xinghen.ace.common.util
 * @Description 获取客户端真实IP
 * @create 2018/5/3 17:24
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class ClientUtil {

    /**
     * 获取客户端真实ip
     *
     * @param request
     * @return
     */
    public static String getClientIp(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
}
